Sebastian’s 86-year-old grandfather, Walter, was also arrested for allegedly helping him bury the body in Hungary.

Arnulf Rumpold, spokesman for the public prosecutor in Graz, told the APA press agency that the suspect was involved in the reconstruction, but said he couldn’t divulge any details. Both the prosecutor and Sebastian’s defence lawyer were present during the reconstruction.

It’s still unclear what happened on the night of June 22nd, but media reports suggest that Sebastian was entertaining friends in the basement of a building where his grandfather lives, in the upmarket area of Geidorf.

A 16-year-old acquaintance of his from Villach (Carinthia) allegedly raped a 14-year-old girl, and then tried to force his friend to do the same.

In revenge, or to free the girl, Sebastian went upstairs to his grandfather’s apartment, took a small rifle from his gun cabinet, and shot Marcel.

He then confessed what had happened to his grandfather, who drove him to the Hungarian border to dispose of the body. Some reports suggest that the pair may have had an accomplice who helped them to bury the body.